Valve and locking device therefor



w. T. SMITHL VALVE AND LOCKING DEVICE'THEREFOR. APPLICATION FILED SEPT.27, 1920.

1,3 3, 9; PatentedJuly 5,1921.

1 y gg 7 New West To allwhomitmay concern:

Be it known that '1, WILLIAM T. SMITH, a citizen of the; United States, residing at Philadelphia, in the county of Philadelphia and State Qof Pennsylvania, have-invented Y new and useful Improvements in Valves and Looking Devices Therefor, of which the following is -a specification:

. .An object of thel'invention is to provide a valve in the nature of a gas cook orthelike, I; which includes suitable locking mechanism whereby when the gas cock isopenand is accidentally closedatla subsequent time, andthen an attempt made to reopen it, the, valvewill be retained ,in :a locked position 1 preventing reopeningthereof until the same is manipulated in a particular manner, bringingabout the unlocking thereof.

The invention is particularly adapted for use in connection with the gas cocks usually 7.: found on gas stoves and is in thenature of:

a safety device to prevent a'child turning otl' thevalve and then subsequently turning it.

on again, and inwhich event,fwiththe present form of-gas cocks-now generally used,

. the gas from the stove .would be permitted to fill the room and/pauseisuffocation'e asphyxiation,

My invention comprehends-a simple forni of mechanism whereby 1t.1s only necessary ,7 to raise the handle of the valve to bring about an unlocking thereof so thatthe valve can be opened, and if the! valve should be accidentally or otherwiseclosed, it will automatically lock and out off the supply of In the further disclosure of the inventionreference is to be had to the accompanying drawings constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which,

Figure 1 is an elevation of the device. Fig. 2 is a vertical sectional view taken through the valve, thevalve proper and supplementary valve being shown in open position.

Referring more particularly to the views 7 I provide a body 10 which is in the nature of Specification of Letters Patenti t a a ed-Ju 92.11 Application filed September 27,1920. Serial No. 412,940. i

wiLLIAM v 'srirrrrn; 01F- PHILADELPHIA, rnriivsvtvnnrli, Assis voit or? oiviiiH ro w L Ia R. ,ri-ioiuasjor PHILADELPHIA, r nsvpvANiA-.

a socket and which has endszll adapted connect on wlth g the usualgas pipe "-12,! 1 Seated 1n the socketportionof the body 10.;

is the usual tapered-valveyl3andwvhichxlias a cross passage 14to be broughtinto oruont of.v registration with; passages 15:in the body:

10 sothat the gas can the body 10 andcoinprehends-a threaded.v

I ow therethroughl .when the valve 13 is opened and will be cut oil when the valve 13 is closed. i-The valve? 13 is secured in any convenient/manner in' shank 15 with whichi-a handle l fihasth readed connection, the l said 'handle more particularly including 4 a head- 17 which a is in threaded engagement with'fthe shank '15. The valve 13 is cored out-sin the'center to receive a supplementary fvalve 18* zwhich when in raised position,permits the'gasto passthrough the passage 14 andwhen in lowered position cuts off-the'passageof-gas. through the pa'ssage 14:. The supplementary valve 18 has a squared stern-- 19=passing upwardly through the head 17- andE'an-eX V pansible helical spring 20, is arranged in the head to bear down uponthe top-of the sup? plementary valve 18, the other end of the spring abutting against the below. mentioned nut19.- The stem 19 projects'lup l tremity. of the squared? stem .19-carries' a cross piece 26 from which dripend a plurality ofretaim'ng pins 27.. nut 19 is seated in a recess at the upper end .of the valve head 17 the nut being provided'with a if squared opening through which the'squared stem 19 of the auxiliary valve18 passes. By

reason of this construction and arrange- 3 ment of parts, it is manifest that thetwo valves 13 and 18 respectively are rotated in unison for the purpose to be hereinafter described. I

When it is desired to'open the gas cook to permit the as to pass through the passage 14, the auxi iary valve 18 is elevated to the position shown in'Fig. 2 by lifting upwardly on the cross piece 26, thus bring the-retaining pins 27 out ofthe slots 25Tonto whichthey normally extend;I "The valve'18fisheld1 in this position at one end against the tension of the spring 20, whilethe handle 16 is operated to open the valve 13. The valve 18 is fitted in the valve 13 to turn with the latter, so that when the main valve 13 is opened the pins 27 are arranged at a vertical alinement with the slots 25, and rest upon the upper face of the plate 23., l/Vhen the handle 16 is operated to close the valve 13, the auxiliary valve 18 turns with the main Valve until the pins 27 are brought into alinement with the slots 25, at which time the spring 20 functions to move the auxiliary valve downwardly to close the'passage in the valve casing. When the parts are'inthe position justmentioned the mainvalve 13 is locked against further movement and cannot be opened without first raising the auxiliary valve and the pins 27 to the posi tion shown in Fig. 2. v i

It Will be understood that I do not limit myself to the particular construction set out in the drawings and described in the speci fication; that various slight changes may be made Without departing from the spirit of the invention and that the'scope of the invention is defined in' the appended claims.

Having described my invention, I claim- 1. A device of the character described comprising a body provided with passages and forming a socket, a'rotarymain valve provided with a cross passage and disposed in said socket to have its passage brought into or out of registration with the passages of the body, a supplementary valve movably disposed within the main valve to intercept the passage thereof, a handle for the main valve to actuate the same, said handle including a head, a stem on the supplementary valve and passing upwardly through the handle, a spring for actuating the supplementary valve, a slotted plate, and retaining pins carried on the stem of the supplementary valve to be moved when the handle is actuated tobring the retaining pins into oroutof line with the slots in the said plate. 2'.- A. device 0f the character described valve in said socket, a supplementary valve movably disposed in the main valve, a handle movable in a horizontal pl'anexto actuate the mainivalve, a stem on the supplementarry valve, a SlOttGdTPlfltBlIl superposition to the supplementary valve, retain ng pins carried on the stem to be moved into or out of line with the said vslots whenathe handle is actuated to actuate the main valve, a spring disposed in the said head to engage said supplementary valvetandl' hold the same in valve-closing position when the main valve is closed and the sald pins dependirito the said slots.

4;. A device of the character described com-a prising a body providing a socket, a valve in said socket, a supplementary valve movably disposed in themain valve, a stem onthe supplementary valve, a standard secured to the valve body and arranged in parallelism with said stem, a horizontally dis: posed plate mounted; on the standard in super-position to the supplementary valve, said plate having an opening. through which the stem slides, and oppositely disposed slots, and retaining pins carried on the stem to be moved into and out of lineywith said slots when the handle is actuated to adjust the main valve. 7 7

In testimony whereof I affix my signature WILLIAM T.- SMITH? 

